Selective Bone Growth Agent Application on Orthopedic Implants
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Solution Overview
Problem
Current implantable prostheses, such as hip and knee replacements, lack provisions for selectively applied bone growth promoting agents and through-holes for bony integration, limiting their application to trauma, fracture, and fusion implants, and do not incorporate pattern-specific treatments.
Innovation Solution
An implantable prosthesis system with a selectively applied bone growth promoting agent, featuring a rod or sheet material with strategically applied agents and patterns, and incorporating holes for bone growth, allowing for enhanced integration with the bone through various surface treatments and attachment methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bone growth promoting agents are applied to general orthopedic implants, then bone integration is improved, but the complexity of the implant increases
Solution Approach 1:
The patent applies bone growth promoting agents selectively to specific regions of the implant rather than uniformly across the entire surface. This allows bone integration enhancement at critical interfaces while maintaining simpler design in non-critical areas, thereby improving reliability without proportionally increasing overall complexity.
Solution Approach 2:
The implant surface is divided into multiple zones with different treatments - some areas receive bone growth promoting agents while others maintain original characteristics. This segmentation allows targeted bone integration where needed while preserving manufacturing simplicity in other regions.
2Reliability
If selectively applied bone growth promoting treatments are implemented, then bone integration is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The bone growth promoting agents are applied during the manufacturing process itself, rather than requiring separate post-manufacturing steps. This preliminary action integrates the treatment into existing manufacturing workflows, improving bone integration without adding significant manufacturing complexity.
Solution Approach 2:
The patent utilizes variations in existing manufacturing parameters (such as coating thickness, agent concentration, or application timing) to achieve selective bone growth promotion. By modifying parameters within existing processes rather than introducing entirely new manufacturing steps, bone integration is improved while manufacturing complexity remains manageable.
3Reliability
If through-holes are added for bone integration, then bone incorporation is improved, but the structural strength of the implant may be compromised
Solution Approach 1:
The patent incorporates through-holes or porous structures in the implant that allow bone to grow through and incorporate with the device. These openings are strategically positioned and sized to provide adequate bone ingrowth pathways while maintaining sufficient structural integrity through proper material distribution and geometric design.
Solution Approach 2:
The implant combines different materials or material densities - solid regions for structural strength and porous/holed regions for bone incorporation. This composite approach allows simultaneous optimization of both strength and bone integration by placing each material type where it provides the most benefit.
Data Source
AI summary
An implantable prosthesis system including a selectively applied bone growth promoting agent is disclosed. The types of prostheses which may include a selectively applied bone growth promoting agent include rods, fracture plates, screws, as well as other types of prostheses. Additionally, the structural composition of many types of prostheses may be modified to help induce bone ingrowth and allow for fusion with the implantable prosthesis.